package com.zhen.netty.codec.msgpack;

import io.netty.bootstrap.Bootstrap;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.DelimiterBasedFrameDecoder;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;


public class EchoClient {

    private final String host;

    private final int port;

    private final int sendNumber;


    public EchoClient(String host, int port, int sendNumber) {
        this.host = host;
        this.port = port;
        this.sendNumber = sendNumber;
    }

    public void run() throws Exception{
        EventLoopGroup group = new NioEventLoopGroup();
        try{
            Bootstrap b = new Bootstrap();
            b.group(group).channel(NioSocketChannel.class)
                    .option(ChannelOption.TCP_NODELAY,true)
//                    .option(ChannelOption.CONNECT_TIMEOUT_MILLIS,3000)
                    .handler(new LoggingHandler(LogLevel.INFO))
                    .handler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                            ch.pipeline().addLast("msgpack decoder",new MsgpackDecoder());
                            ch.pipeline().addLast("msgpack encoder",new MsgpackEncoder());
                            ch.pipeline().addLast(new EchoClientHandler(sendNumber));
                        }
                    });
            ChannelFuture f = b.connect(host,port).sync();
            f.channel().closeFuture().sync();
        }finally {
            group.shutdownGracefully();
        }
    }

    public void connect(int p ,String h) throws Exception{
        EventLoopGroup group = new NioEventLoopGroup();
        try{
            Bootstrap b = new Bootstrap();
            b.group(group).channel(NioSocketChannel.class)
                    .option(ChannelOption.TCP_NODELAY,true)
                    .handler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                            ByteBuf delimiter = Unpooled.copiedBuffer("$_".getBytes());
                            ch.pipeline().addLast(new DelimiterBasedFrameDecoder(1024,delimiter));
                            ch.pipeline().addLast(new StringDecoder());
                            ch.pipeline().addLast(new com.zhen.netty.frame.delimiter.EchoClientHandler());
                        }
                    });
            ChannelFuture f = b.connect(h,p).sync();
            f.channel().closeFuture().sync();
        }finally {
            group.shutdownGracefully();
        }
    }

    public static void main(String[] args) throws Exception {
        int port = 8080;
        if(args != null && args.length > 0){
            try{
                port = Integer.parseInt(args[0]);
            }catch (NumberFormatException e){
                e.printStackTrace();
            }
        }
//        new EchoClient("127.0.0.1",port,1000).run();
        new EchoClient("127.0.0.1",port,10).run();
    }
}
